Question about Pontiac Grand Am

5 Answers

I just replaced the motor now its shifting hard was there a specific way to hook up the linkage or how do i resolve

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  • 2 more comments 
  • mui_fresco Jul 14, 2010

    how do you check if the transmission is aligned

  • mui_fresco Jul 14, 2010

    1999 pontiac grand am GT 3400

  • mui_fresco Jul 14, 2010

    1999 pontiac grand am 3400

  • mui_fresco Jul 14, 2010

    thank you for your time and your input will try and get back to you goodnight

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5 Answers

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  • Master
  • 1,016 Answers

Hi,

You need to do a line pressure test of the tranmission pressure system with and oil pressure tester.

It seems like you have lost some of the oil pressure in the system.
If you have got a problem with the pressure then you need to check the accumulator.

But this will depend on if the problem is on shifting up or down gears.

Or if it is just happening when you engage into D then you could have a vacum signal to the modulator problem.
Check all your vacum lines going down to the transmission that they are tight and connected properly.

Unfortunately I don't have your year of vehicle .
Hope this helps, let me know if you need more information

Thanks

Jason

Posted on Jul 14, 2010

  • 5 more comments 
  • mui_fresco Jul 14, 2010

    1999 pontiac grand am GT 3400 there is no vacum lines its electrical

  • Jason Maurirere
    Jason Maurirere Jul 14, 2010

    Yep it is electrical, now if you are getting hard shifting it is a pressure problem to the modulator.



    You need to check this first. If this is ok then you will need to start looking at fault codes.

    But this is quite a process.



    If the transmission wasn't bolted up correctly it wouldn't be operating at all, so that area should be ok.

    Check the pressures and let me know.

  • mui_fresco Jul 14, 2010

    is it possible that i dont have the axles engaged properly and thats why its shifting hard cause its slipping

  • Jason Maurirere
    Jason Maurirere Jul 14, 2010

    Check your fluid levels make sure they are correct.



    If your axles were not fitted correctly it would be make some very loud crunching sounds and you would not be able to refit the front wheel assemblies back on, as the axle s would protrude.



    If all you did was replace the engine and the transmission was working fine before that then you have just removed or taken something off that hasn't been put back on.



    Check all your wiring connections, plugs and loom to the switchs and sensors on the transmision.

    If these are all ok.

    Then check the oil pressure lines and system, if this is ok then you have a electrical fault which means you will need to connect a data II decoder to find out exactly what is going on.



  • mui_fresco Jul 14, 2010

    how do i check the lines to the modulator

  • mui_fresco Jul 14, 2010

    how do i check the pressure to the modulator

  • Jason Maurirere
    Jason Maurirere Jul 14, 2010

    You need a line pressure gauge and connect it to the transmission cooler line and run the engine and shift it through the gears.



    Aproximate line pressure's should be min - 50psi max 152-160 psi

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  • Pontiac Master
  • 6,826 Answers

I don't know your engine size or if you have an automatic transmission: 2.4L Engine (With Manual Transmission) To Remove:

  1. Disconnect the negative battery cable
  2. Drain the cooling system.
  3. Recover the A/C System refrigerant.
  4. Remove the air cleaner assembly.
  5. Remove the underhood fuse block.
  6. Remove the air cleaner bracket using the following procedure:
    • Remove the battery tray.
    • Disconnect the wiring harness and set aside.
    • Reposition the engine heater cable, if equipped.
    • Remove the bracket mounting bolts from the strut tower.
    • Remove the bracket mounting bolts from the body.
    • Remove the bracket from the engine compartment.
  7. Disconnect the shift cables from the shift control.
  8. Remove the shift cables from the bracket and remove the bracket.
  9. Disconnect the back up lamp switch.
  10. Disconnect the vehicle speed sensor.
  11. Disconnect the upper engine electrical harness.
  12. Disconnect the vacuum lines.
  13. Relieve the fuel system pressure.
  14. Disconnect the fuel line quick disconnects.
  15. Remove the upper radiator hose
  16. Disconnect the heater hoses from the heater core.
  17. Disconnect the clutch slave cylinder hydraulic line.
  18. Remove the EVAP solenoid.
  19. Disconnect the ground cables at the rear of the engine block.
  20. Remove the power steering pump assembly. Set the pump aside.
  21. Disconnect the electrical connector from the CKP and A/C compressor. Set the harness aside.
  22. Remove the starter and harness assembly and set aside.
  23. Disconnect the surge tank bypass hose from the engine.
  24. Disconnect the accelerator and cruise control cables from the throttle body.
  25. Remove the cruise control module and set aside.
  26. Strap the radiator to the radiator support.
  27. Raise and safely support the vehicle.
  28. Install a safety strap to the front of the vehicle and the lift.
  29. Drain the transaxle fluid.
  30. Drain the engine oil and remove the oil filter.
  31. Remove the engine splash shields.
  32. Remove the front closeout panel.
  33. Remove the lower radiator support.
  34. Remove the right front brake hose from the vehicle.
  35. Remove the mounting nut from the BPMV at the mounting bracket.
  36. Disconnect the wheel speed sensors.
  37. Remove the wheel speed sensor harnesses from the control arm retainers.
  38. Remove the wheel speed sensor harnesses from the frame retainers and set aside.
  39. Remove the front axle shafts.
  40. Disconnect the control arms ball joints from the.
  41. Disconnect the outer tie rod ends from the control arms.
  42. Disconnect the catalytic converter from the exhaust manifold.
  43. Remove the A/C compressor hose from the A/C compressor.
  44. Remove the bolt from the power steering pressure hose retainer.
  45. Lower the vehicle until the front suspension crossmember rests on the support table.
  46. Position a three inch block of wood between the front of the oil pan and the crossmember.
  47. Remove the front engine mount bolts from the bracket.
  48. Remove the front suspension crossmember mounting bolts.
  49. With the help of an assistant, carefully raise the vehicle off of the engine/transaxle assembly.
  50. Attach the engine sling.
  51. Install the engine sling to the engine/transaxle assembly.
  52. Remove the front transmission mount thrubolt.
  53. Remove the rear transmission mount thrubolt.
  54. Remove the two side transmission mount lower mounting nuts.
  55. Lift the engine/transaxle assembly off of the front suspension crossmember.
  56. Separate the transaxle from the engine.
  57. Remove the clutch pressure plate and clutch disc.
  58. Remove the flywheel.
  59. Mount the engine on a suitable engine stand.
To Install:
  1. Remove the engine from the engine stand.
  2. Install the flywheel.
  3. Install the clutch disc and pressure plate assembly.
  4. Install the transaxle to the engine.
  5. Lower the engine/transaxle assembly and position it on the front crossmember.
  6. Install the two side transmission mount lower mounting nuts.
    • Tighten to 60 ft lb (44 Nm).
  7. Install the rear transmission mount thrubolt.
    • Tighten to 75 ft lb (55 Nm).
  8. Install the front transmission mount thrubolt.
    • Tighten to 75 ft lb (55 Nm).
  9. Remove the engine hoist and sling.
  10. With the help of an assistant, carefully lower the vehicle on to the engine/transaxle assembly.
  11. Install the front suspension crossmember mounting bolts.
  12. Install the front engine mount to bracket mounting bolts.
  13. Raise the vehicle off of the support table.
  14. Install the bolt to the power steering pressure line retainer.
  15. Install the A/C compressor hose to the A/C compressor.
  16. Install the catalytic converter to the exhaust manifold.
  17. Install the outer tie rod ends to the control arms.
  18. Install the ball joints to the control arms.
  19. Install the front axle shafts.
  20. Install the wheel speed sensor harnesses to the frame retainers.
  21. Install the wheel speed sensor harnesses to the control arm retainers.
  22. Connect the wheel speed sensors.
  23. Install the BPMV mounting nut to the mounting bracket.
  24. Install the right front brake hose.
  25. Install the lower radiator support.
  26. Install the front closeout panel.
  27. Install the engine splash shields.
  28. Install a new oil filter and fill the engine with oil.
  29. Fill the transaxle with the specified transmission fluid.
  30. Remove the safety straps from the front of the vehicle and the lift.
  31. Lower the vehicle.
  32. Release the radiator from the radiator support.
  33. Install the cruise control module.
  34. Connect the accelerator and cruise control cables to the throttle body.
  35. Connect the surge tank bypass hose to the engine.
  36. Install the starter
  37. Connect the CKP and A/C compressor harness electrical connectors.
  38. Install the power steering pump.
  39. Connect the ground cables at the rear of the engine block
  40. Install the EVAP solenoid.
  41. Connect the clutch slave cylinder hydraulic line.
  42. Connect the heater hoses to the heater core.
  43. Connect the radiator hoses.
  44. Connect the fuel line quick disconnects.
  45. Connect the vacuum lines.
  46. Connect the upper engine electrical harness.
  47. Connect the VSS.
  48. Connect the back up lamp switch.
  49. Install the shift cable bracket and the shift cables.
  50. Connect the shift cables at the shift control.
  51. Install the air cleaner bracket.
  52. Install the underhood fuse block.
  53. Install the air cleaner assembly.
  54. Charge the A/C system.
  55. Fill the cooling system.
  56. Connect the negative battery cable.

Posted on Jul 14, 2010

  • 4 more comments 
  • mui_fresco Jul 14, 2010

    i need info for 1999 pontiac grand am GT 3400 that would be great

  • Duane Wong
    Duane Wong Jul 14, 2010

    OK, here are the right directions for the 3.4L engine:



    3.4L Engine
    To Remove:


    1. Disconnect the negative battery cable.
    2. Remove the hood.
    3. Drain the engine coolant.
    4. Remove the engine air cleaner assembly.
    5. Relieve fuel pressure.
    6. Remove the drive belt.
    7. Remove the hoses from the surge tank
    8. Remove the cruise control module.
    9. Remove the engine wiring harness from the top of the engine. Set the harness aside.
    10. Disconnect the throttle and cruise control cable.
    11. Raise and safely support the vehicle.
    12. Remove flywheel inspection cover.
    13. Remove the starter.
    14. Remove the Air Conditioning (A/C) compressor with the lines attached.
    15. Position the A/C compressor aside.
    16. Disconnect lower engine wiring harness and position aside.
    17. Disconnect the catalytic converter flange from the rear exhaust manifold.
    18. Remove the torque converter bolts.
    19. Remove the right front fender liner.
    20. Remove the brace that joins the transaxle to the engine.
    21. Remove the front transmission mount and bracket.
    22. Remove the 2 outer transmission mounting bolts.
    23. Lower the vehicle.
    24. Disconnect the upper and the lower radiator hoses.
    25. Disconnect the fuel lines at the quick-connects.
    26. Disconnect the engine vacuum hose from the brake booster.
    27. Disconnect the heater hoses.
    28. Remove the power steering pump.
    29. Install the engine lifting device.
    30. Remove the engine mount and adapter.
    31. Remove the remaining bolts that retain the transaxle to the engine.
    32. Remove the engine from the vehicle.
    33. Remove the engine flywheel.
    34. Mount the engine onto a suitable engine stand.

    To Install:


    1. Attach the engine lifting device.
    2. Remove the engine from the engine stand.
    3. Install the engine flywheel.

      • Tighten bolts to 52 ft lb (71 Nm).

    4. Position the engine in the vehicle and align the engine with the transaxle.
    5. Install the upper transaxle mounting bolts.

      • Tighten the bolts to 66 ft. lb (90 Nm).

    6. Install the engine mount assembly.
    7. Remove the engine lifting device.
    8. Install the power steering pump to the engine front cover.
    9. Connect the upper and the lower radiator hoses.
    10. Lift the vehicle.
    11. Install the 2 mounting bolts that secure the outer transaxle to the engine.

      • Tighten the bolts to 66 ft lb (90 Nm).

    12. Install the transaxle to engine brace.
    13. Install the right front fender liner.
    14. Install the torque converter bolts.
    15. Install the A/C compressor.
    16. Install the starter.
    17. Install the flywheel inspection cover.
    18. Install the catalytic converter to the rear exhaust manifold.
    19. Install a new oil filter.
    20. Install the lower engine wiring harness.
    21. Lower the vehicle.
    22. Connect the fuel lines.
    23. Install the heater hoses.
    24. Install the engine wiring harness and the retainers at the top of the engine.
    25. Connect the vacuum hoses.
    26. Connect the cruise control cable.
      CAUTION
      In order to avoid possible injury or vehicle damage always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle. In order to avoid cruise control cable damage, position the cable out of the way while you remove or install the engine. Do not pry or lean against the cruise control cable and do not kink the cable. You must replace a damaged cable.

    27. Replace the throttle control cable.
    28. Install and connect the cruise control module.
    29. Install the drive belt.
    30. Connect the surge tank hoses.
    31. Install the hood.
    32. Install the air cleaner assembly.
    33. Fill the engine coolant.
    34. Fill the crankcase to the correct level.
    35. Start the engine and inspect for leaks.


  • Duane Wong
    Duane Wong Jul 14, 2010

    Align the engine by making its flat side line up parallel and in line with the flat mating surface of the transmission.



    You can eyeball this as you slowly lower the engine down into the under hood cavity.



    Wish you luck on fixing this problem.

  • mui_fresco Jul 14, 2010

    how can i tell if i have the axles all the way in and if they are not correctly engaged would that cause it to shift hard

  • Duane Wong
    Duane Wong Jul 14, 2010

    Your welcome.

  • Duane Wong
    Duane Wong Jul 14, 2010

    The half shafts just snap in and you'll feel them snap in. If they don't go all of the way in, then

    it could cause problems later if it would come out, but this is unlikely if you give it a good push in

    (maybe 30 to 40 lbs. of firm side pressure in all at once with both hands and arms).



    If it runs down the road, then you're ok, as far as that.



    The hard shifting is more closely related to step 49. Install the shift cable bracket and shift cables.

    And, step 50. Connect the shift cables at the shift control.



    It is hard to say from my end if the cables were installed correctly, but if you check for ease of sliding and actuation, I'm sure you can figure out if they're hooked up right.



    Good luck on this.

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  • Expert
  • 252 Answers

Hi there,

I've been in a similar situation with swapping out my Honda engine. As with wheel bearings, you need to find a happy-medium between having the linkage tight enough to keep it in there and slack enough to keep the shift nice and smooth.

Jack up the car and get someone to shift through the gears while you look underneath, The linkage might be snagging on something (easy stuff 1st).

Loosen the linage pinch bolts a half turn at a time, check the action. NIp it up 1/4 turn more when you are happy and check after a few hundred miles. Copper grease the threads too so they dont rust up.

If this doesn't work, then make sure the gear selector is not bent. Check the condition of where the gear selector goes to the gbox. If it is rusted up or damaged from the motor change, then it will need replaced.

I hope this helps you, remember to try the easy (free) stuff first. Good luck.

Posted on Jul 14, 2010

  • Dan Martin
    Dan Martin Jul 14, 2010

    You can use a clutch alignment toolhttp://www.clutchtools.com/. Really though, if it is slightly out of alignment you would feel a judder through the clutch.

    I still stand by the remedy of checking the linkage where the lever is and at the gearbox side. It is easy to catch them on the gearbox casing or tighten them up too tight, which causes a hard shift.



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  • Master
  • 678 Answers

A better description of the vehicle and engine your working on will be helpful . If the transmission has a detent cable connected to the throttle linkage it may have to be adjusted. However, i haven't seen a car newer then an early 90s model with a detent cable.

Posted on Jul 14, 2010

  • mui_fresco Jul 14, 2010

    1999 pontiac grand am GT 3400 it was working perfectly fine with last motor

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  • Master
  • 2,272 Answers

You will have to remove and reconnect the alignment.The motor is not hooked properly.Or the transmission alignment needs to be checked.Also get the shift cable checked from transmission. And exactly which motor did you replaced.Was it exact part number for your vehicle and what is the exact part number. Keep updated.Thanks.

Posted on Jul 14, 2010

  • mui_fresco Jul 14, 2010

    im not the mechanic but its my car how do you check the alignment

  • mui_fresco Jul 14, 2010

    how would the motor not be hooked up right

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